CFR > Title 29 - Labor > SUBTITLE B—Regulations Relating to Labor > CHAPTER XVII—OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (parts 1900 to 1990) > PART 1910—OCCUPATIONAL SAFETY AND HEALTH STANDARDS > SUBPART S—Electrical (§1910.301 to §1910.399) > 1910.302—Electric utilization systems.

1910.302—Electric utilization systems.

Sections 1910.302 through 1910.308 contain design safety standards for electric utilization systems.
(a) Scope— (1) Covered. The provisions of §§ 1910.302 through 1910.308 cover electrical installations and utilization equipment installed or used within or on buildings, structures, and other premises, including:
(i) Yards;
(ii) Carnivals;
(iii) Parking and other lots;
(iv) Mobile homes;
(v) Recreational vehicles;
(vi) Industrial substations;
(vii) Conductors that connect the installations to a supply of electricity; and
(viii) Other outside conductors on the premises.
(2) Not covered. The provisions of §§ 1910.302 through 1910.308 do not cover:
(i) Installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles other than mobile homes and recreational vehicles;
(ii) Installations underground in mines;
(iii) Installations of railways for generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock or installations used exclusively for signaling and communication purposes;
(iv) Installations of communication equipment under the exclusive control of communication utilities, located outdoors or in building spaces used exclusively for such installations; or
(v) Installations under the exclusive control of electric utilities for the purpose of communication or metering; or for the generation, control, transformation, transmission, and distribution of electric energy located in buildings used exclusively by utilities for such purposes or located outdoors on property owned or leased by the utility or on public highways, streets, roads, etc., or outdoors by established rights on private property.
(b) Extent of application— (1) Requirements applicable to all installations. The following requirements apply to all electrical installations and utilization equipment, regardless of when they were designed or installed:

Code of Federal Regulations

§ 1910.303(b) —Examination, installation, and use of equipment

Code of Federal Regulations

§ 1910.303(c)(3) —Electrical connections—Splices

Code of Federal Regulations

§ 1910.303(d) —Arcing parts

Code of Federal Regulations

§ 1910.303(e) —Marking

Code of Federal Regulations

§ 1910.303(f) , except (f)(4) and (f)(5)—Disconnecting means and circuits

Code of Federal Regulations

§ 1910.303(g)(2)—600 volts or less—Guarding of live parts

Code of Federal Regulations

§ 1910.304(a)(3) —Use of grounding terminals and devices

Code of Federal Regulations

§ 1910.304(f)(1)(i), (f)(1)(iv), and (f)(1)(v) —Overcurrent protection—600 volts, nominal, or less

Code of Federal Regulations

§ 1910.304(g)(1)(ii), (g)(1)(iii), (g)(1)(iv), and (g)(1)(v) —Grounding—Systems to be grounded

Code of Federal Regulations

§ 1910.304(g)(4) —Grounding—Grounding connections
Code of Federal Regulations 838

Code of Federal Regulations

§ 1910.304(g)(5) —Grounding—Grounding path

Code of Federal Regulations

§ 1910.304(g)(6)(iv)(A) through (g)(6)(iv)(D), and (g)(6)(vi)—Grounding—Supports, enclosures, and equipment to be grounded

Code of Federal Regulations

§ 1910.304(g)(7) —Grounding—Nonelectrical equipment

Code of Federal Regulations

§ 1910.304(g)(8)(i) —Grounding—Methods of grounding fixed equipment

Code of Federal Regulations

§ 1910.305(g)(1) —Flexible cords and cables—Use of flexible cords and cables

Code of Federal Regulations

§ 1910.305(g)(2)(ii) and (g)(2)(iii) —Flexible cords and cables—Identification, splices, and terminations

Code of Federal Regulations

§ 1910.307 , except as specified in § 1910.307(b) —Hazardous (classified) locations
(2) Requirements applicable to installations made after March 15, 1972. Every electrical installation and all utilization equipment installed or overhauled after March 15, 1972, shall comply with the provisions of §§ 1910.302 through 1910.308, except as noted in paragraphs (b)(3) and (b)(4) of this section.
(3) Requirements applicable only to installations made after April 16, 1981. The following requirements apply only to electrical installations and utilization equipment installed after April 16, 1981:

Code of Federal Regulations

§ 1910.303(h)(4) —Over 600 volts, nominal—Entrance and access to work space

Code of Federal Regulations

§ 1910.304(f)(1)(vii) and (f)(1)(viii) —Overcurrent protection—600 volts, nominal, or less

Code of Federal Regulations

§ 1910.304(g)(9)(i) —Grounding—Grounding of systems and circuits of 1000 volts and over (high voltage)

Code of Federal Regulations

§ 1910.305(j)(6)(ii)(D) —Equipment for general use—Capacitors

Code of Federal Regulations

§ 1910.306(c)(9) —Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts—Interconnection between multicar controllers

Code of Federal Regulations

§ 1910.306(i) —Electrically driven or controlled irrigation machines

Code of Federal Regulations

§ 1910.306(j)(5) —Swimming pools, fountains, and similar installations—Fountains

Code of Federal Regulations

§ 1910.308(a)(1)(ii) —Systems over 600 volts, nominal—Aboveground wiring methods

Code of Federal Regulations

§ 1910.308(c)(2) —Class 1, Class 2, and Class 3 remote control, signaling, and power-limited circuits—Marking

Code of Federal Regulations

§ 1910.308(d) —Fire alarm systems
(4) Requirements applicable only to installations made after August 13, 2007. The following requirements apply only to electrical installations and utilization equipment installed after August 13, 2007:

Code of Federal Regulations

§ 1910.303(f)(4) —Disconnecting means and circuits—Capable of accepting a lock

Code of Federal Regulations

§ 1910.303(f)(5) —Disconnecting means and circuits—Marking for series combination ratings

Code of Federal Regulations

§ 1910.303(g)(1)(iv) and (g)(1)(vii)—600 Volts, nominal, or less—Space about electric equipment

Code of Federal Regulations

§ 1910.303(h)(5)(vi) —Over 600 volts, nominal—Working space and guarding

Code of Federal Regulations

§ 1910.304(b)(1) —Branch circuits—Identification of multiwire branch circuits

Code of Federal Regulations

§ 1910.304(b)(3)(i) —Branch circuits—Ground-fault circuit interrupter protection for personnel

Code of Federal Regulations

§ 1910.304(f)(2)(i)(A), (f)(2)(i)(B) (but not the introductory text to § 1910.304(f)(2)(i) ), and (f)(2)(iv)(A)—Overcurrent protection—Feeders and branch circuits over 600 volts, nominal

Code of Federal Regulations

§ 1910.305(c)(3)(ii) —Switches—Connection of switches

Code of Federal Regulations

§ 1910.305(c)(5) —Switches—Grounding

Code of Federal Regulations

§ 1910.306(a)(1)(ii) —Electric signs and outline lighting—Disconnecting means

Code of Federal Regulations

§ 1910.306(c)(4) —Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts—Operation

Code of Federal Regulations

§ 1910.306(c)(5) —Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts—Location

Code of Federal Regulations

§ 1910.306(c)(6) —Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts—Identification and signs

Code of Federal Regulations

§ 1910.306(c)(7) —Elevators, dumbwaiters, escalators, moving walks, wheelchair lifts, and stairway chair lifts—Single-car and multicar installations

Code of Federal Regulations

§ 1910.306(j)(1)(iii) —Swimming pools, fountains, and similar installations—Receptacles

Code of Federal Regulations

§ 1910.306(k) —Carnivals, circuses, fairs, and similar events

Code of Federal Regulations

§ 1910.308(a)(5)(v) and (a)(5)(vi)(B) —Systems over 600 volts, nominal—Interrupting and isolating devices
Code of Federal Regulations 839

Code of Federal Regulations

§ 1910.308(a)(7)(vi) —Systems over 600 volts, nominal—Tunnel installations

Code of Federal Regulations

§ 1910.308(b)(3) —Emergency power systems—Signs

Code of Federal Regulations

§ 1910.308(c)(3) —Class 1, Class 2, and Class 3 remote control, signaling, and power-limited circuits—Separation from conductors of other circuits

Code of Federal Regulations

§ 1910.308(f) —Solar photovoltaic systems
(c) Applicability of requirements for disconnecting means. The requirement in § 1910.147(c)(2)(iii) that energy isolating devices be capable of accepting a lockout device whenever replacement or major repair, renovation or modification of a machine or equipment is performed, and whenever new machines or equipment are installed after January 2, 1990, applies in addition to any requirements in § 1910.303 through § 1910.308 that disconnecting means be capable of being locked in the open position under certain conditions.